Page 64
FIGURE 24
ASSEMBLED ROOF MOUNTING FRAME
FIGURE 25
ROOF
MOUNTING FRAME
(Extends around entire
perimeter of unit)
FIBERGLASS
INSULATION
(Furnished)
COUNTER FLASHING
(Field Supplied)
UNIT BASE
BOTTOM
RIGID INSULATION
(Field Supplied)
ROOFING
MATERIAL
CANT STRIP
(Field Supplied)
NAILER STRIP
(Furnished)
UNIT BASE
RAIL
TYPICAL FLASHING DETAIL
C-Outdoor Air Dampers
T1DAMP11A-1 is available for KGA 2, 2.5, 3, 4 and 5 ton
unit and T1DAMP11N-1 is available for the KGA/KGB 6 and
7-1/2 ton units. Both sets include the outdoor air hood. A
motorized kit (T1DAMP21AN1) can be ordered separately
for all KGB unit sizes. The dampers may be manually or
motor (M) operated to allow up to 25 percent outside air into
the system at all times (see figure 26). Washable filter sup
plied with the outdoor air dampers can be cleaned with wa
ter and a mild detergent. It should be sprayed with Filter
Handicoater when dry prior to re-installation. Filter Handi
coater is R.P. Products coating no. 418 and is available as
Part No. P-8-5069.
FIGURE 26
MOTORIZED
DAMPER ASSEMBLY
MANUAL OUTDOOR AIR
DAMPER - PAINTED SIDE
B7
DAMPER
MOTOR
OUTDOOR AIR DAMPER
D-Supply and Return Diffusers (all units)
Optional flush mount diffuser/return FD9-65 and
FD11-95 and extended mount diffuser/return RTD9-65
and RTD11-95 are available for use with all KGB units.
Refer to manufacturer's instructions included with tran
sition for detailed installation procedures.
E-Economizer
(Field or Factory Installed)
Unit may contain an optional factory-installed economizer
equipped with an A6 enthalpy control and an A7 outdoor
enthalpy sensor. The modulating economizer opens fully to
use outdoor air for free cooling when temperature is suit
able and opens to minimum position during the occupied
time period.
The A6 enthalpy control is located in the economizer ac
cess area. See figure 27. The A7 enthalpy sensor is located
on the division panel between horizontal supply and return
air sections.
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